Attachment for printing-presses



v (No Model.)

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v ATTAOHMENT FOR PRINTING PRBSSES. No. 431,224. Patented-July 1, 1890.

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UNITED STATES.

PATENT OFFICE.

GEORGE COOK, OF MACON, ILLINOIS.

ATTACHMENT FOR PRlNTlNG-PRESSES.

SPECIFICATION forming part of Letters Patent No. 431,224, dated uly 1, 1890.

Application filed February 19, 1890. Serial No. 341,071. (No model.)

' Macon, in the county of Macon and State of Illinois, have invented an Attachment for Printing-Presses, of which the following is a specification.

It is the object to enable hand-presses to be operated by foot-power; and my invention consists in the details of construction and combinations of parts, hereinafter set forth and claimed.

In the drawing accompanying and forming a part of this specification, the platen of a press is shown at a, the bed at b, and the peculiar combination of lever and toggle joint common to such devices is shown at c and d. The member d is pivotally connected with the head a of the press-frame, as indicated at e, and member 0 is pivotally connected with member cl at f. Bar g bears in the customary slot in m emberd, connects pivotally with arm 2'. and provides a point of connection for treadle-rod 7c, Bracket Z is firmly secured to a leg or standard of the press-frame, and it provides a pivotal bearing for arm 11. Bracket n provides a pivot for the treadle p, and is suitably secured to the press-frame. The

treadle has the pedal q hinged at 0" in such manner that it may be turned up out of the way when not in use, and it also has the The pivot of the notches s in its under side.

treadle is shown at 0, that of the arm "i at m, and the pivotal connection of bar 1' with arm g is shown at h. The various movable parts are held in their shown position by springs 1 which press against collars no on rods w and tend constantly to raise the platen. IVhen foot-pressure is applied to the treadle, bar g and arm 1 are affected by rod 7c, the platen is pressed downward with constantly-increasing power, and an imprint is made with sufficient pressure to insure good results. The operation is made with ease and celerity, and there is no cumbrons mechanism over the platen to be actuated laboriously by hand.

I claim- In combination with a printing-press of the class set forth, arm 2', having a permanent pivot, bar g, pivotally connecting with the swinging end of arm 1' and bearing with its free end against the platen-actuating mechanism of the press, treadle p, and rod is, connecting the treadle with the junction of arm 1' and bar 9, as set forth.

In testimony whereof I have signed my name in the presence of two subscribing witnesses.

GEORGE WV. COOK.

Attest: I. D. WALKER, -L. P. GRAHAM. 

